This is an excerpt from a report made to the Aviation Safety Reporting System. The narrative is written by the pilot, rather than FAA or NTSB officials. To maintain anonymity, many details, such as aircraft model or airport, are often scrubbed from the reports.
While cruising at FL180 enroute from ZZZ to ZZZ1 under control of ATC, an unknown foreign object impacted the windshield, fracturing the outer glass layer. The windshield remained intact.
I advised ATC and requested vectors to the nearest suitable airport. An instrument approach was required with an uneventful landing.
The incident resulted in no injuries to the pilot or passenger onboard the PA-46 Malibu Meridian.
The unknown foreign object appears to possibly been some form of space debris for at the time of the incident the aircraft was not near any convective activity nor was it experiencing any other weather phenomenon.
Primary Problem: Environment